this is something the white house and nsa deny. "wall street journal" reports the president was only made aware of this last summer. conflicting at this point. neither answers is satisfying because either he didn't have enough oversight or he hasn't been entirely forthcoming. demands for more information. some of these things are so sensitive, he can't go into full detail. >> there's a review under way right now. we expect other potentially controversial details to emerge. >> no question. they a real worry now particularly for relationships sensitive intelligence sharing relationships with the u.s. we share intelligence with the germans, french and so on. these relationships in south asia, in the middle east, more difficult countries for which a revelation they're cooperating on a country like iran could be damaging for them and u.s. relationships with them. >> in germany, this is especially sensitive because of east germany and the way it was ruled during the communist era. this is such a sensitive issue for the chancellor angela